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223921

Sigma-Aldrich

Ascarite®

Sodium hydroxide-coated silica, 20-30 mesh

Synonym(s):

Ascarite CO2 adsorbent

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About This Item

CAS Number:
MDL number:
UNSPSC Code:
12352302
NACRES:
NA.22

Quality Level

form

granular

particle size

20-30 mesh

InChI

1S/Na.H2O/h;1H2/q+1;/p-1

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M

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General description

Ascarite® is sodium hydroxide coated silica mainly used as carbon dioxide adsorbents. It is the second generation of the original Ascarite, which was derived from granular asbestos. Ascarite rapidly and quantitatively adsorbs carbon dioxide, (and acid gases), and is useful in a number of analytical and microanalytical procedures, physiological studies, etc.

Application

Ascarite® can be used as a carbon dioxide (CO2) trap.

Features and Benefits

The material is self-indicating, gradually changing color (to white) within a narrow zone due to the formation of sodium carbonate.

Legal Information

Ascarite is a registered trademark of Arthur H. Thomas Co.

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Reduction of [11C] CO2 to [11C] CO using solid supported zinc.
Dahl K, et al.
Journal of Labelled Compounds & Radiopharmaceuticals, 60(13), 624-628 (2017)
Highly selective iron-based Fischer?Tropsch catalysts activated by CO2-containing syngas
Chun D H, et al.
J. Catal., 317, 135-143 (2014)
Weiqing Liu et al.
Carbohydrate polymers, 93(1), 199-206 (2013-03-08)
Dissolution of waxy corn starch in 1-ethyl-3-methylimidazolium acetate (EMIMAc) was qualitatively studied and compared with gelatinisation process in water. The rheological properties of starch-EMIMAc solutions were investigated in dilute and semi-dilute regions, from 0.1 to 10 wt% over temperature range
Qiang Yu et al.
Bioresource technology, 129, 592-598 (2013-01-12)
Liquid hot water (LHW), dilute hydrochloric acid (HCl) and dilute sodium hydroxide (NaOH) were applied to sugarcane bagasse (SB). Application of the same analytical methods and material balance approaches facilitated meaningful comparisons of glucose and xylose yields from combined pretreatment
Xin-Cun Yao et al.
Carbohydrate polymers, 94(1), 88-90 (2013-04-03)
Most polysaccharides cannot dissolve in water but can be hydrolysed using hydrogen peroxide (H2O2) to yield a water-soluble product. This study presents a method of preparing water-soluble polysaccharides from peach gum by hydrolysis using H2O2. Extraction was monitored by the

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